I have 2 layer hens (and a rooster) Recently I have gotten a couple of eggs with red-tinted albumen from them. What might be the cause of this? The eggs were fresh, it was not the red spot of a fertilized egg, but red strands running all through. They eat mainly commercial layer feed with some plant material tossed in and whatever bugs or lizards stray into their coop. I threw the eggs out a couple times but the last time I just used it anyway, it seems to have been OK.